Balancing machine



July 27,1937. T. Y. OLSEN BALANCING MACHINE Filed me 12, 1934 INVENTOR m w I ATTORNEY Patented July 27, 1937 2,088,553 BALANCING MACHINE Thorsten Y; Olsen; Philadephia, Pa, assignor to Tinius Olsen Testing Machine Company, Philadelphia, Pa., a corporation of Pennsylvania ApplicationJune lz, 1 934 Serial No. 730,203

5 cla s. (cits-51) f pairs r carries} ,;,;,The object of this invention is to devise a .machine, and I have therefore deemedit' to be novel, balancing machine wherein the means emunnecessary to illustrate and describe in detail ployedflfor forming a fixed pivot for the ,viazcomplete balancing machine as tlieoonstrucmbratory movements of a rotatable body tobe tion androperation' of a balancing machine'is tested is independent of the vibratory support .nowwell known in the art. 1*

ofsuch body. The mounting for the pivot form- .In machines of this type, the a e n ing means may be adjustable to provide a fixed the angular'location of the unbalance is deterpivot at any desiredlocation within the range mined. The? body to be tested is =rotatably for which the machine is built or it may have mounted on a vibratory supports and re olv d axpermanently fixed location. i at a desired speed by a motor, operatively con-=10 A further object is to devise a balancing manected with the body, and mounted on the vi- 'chinewherein the rotatable body to be tested bratory' support or having an independent I is mounted on a vibratory support carriedby mounting. g vibration members having a fixed position on a The body may be revolved in any desired man the base of the machine, so that the" entire nor, for example by the means disclosed inthe weight is carried by the vibration members, and Lundgren application Serial No. 537,843; the y-the means employed for providing a right or Ohlson application,-Serial No, 666,085, or byany 'wleft fixed pivot are adjustable longitudinally of other suitable means. i i i s a the bed or permanently fixed in a selected posi- J I. designates the base or bed of i the: machine o tion. i

With the above and other objects in, view .as pare levelled by set screws 3 provided at the? four -1Wl11 hereinafter 'clearly appear, my invention corners of the base. i 1 i comprehends a novel balancing machine. The; base is provided with f m; dj 1 It further oomprehends a novel balancing matracks or rails t to which base plates 5 are-fixed which is provided withjsup-port pads 2 which i chine wherein the means employed foriforming by fastening devices 5. l are vibratory membersiiafixed pivot for the vibratory movements of a .rotatably adjustable on the base platesand held 1 rotatable body under test are entirely independin adjusted position bynuts 8.

ent: of the flexible mounting which carries the f The vibratory members 1 form' a fiexible c ib a tory Support lfor the rotatable body. I mounting and may be of any desired or lconven- It further comprehends novel means for formvtional construction, for example, as illustrated in ing one or more fixed pivots for the vibratory the Jacob Lundgrenapplication for Balancing movements of the support for a rotatable body. i machine, Serial No.1620,258. These vibration Other novel features of construction and adi members l may be of reduced thickness intervantage will-hereinafter more clearly appear in mediate their ends .andhave their upper porthe detailed description and the appended tions formed by rods 3 rotatably mountedjinthec claims. i i members i and in the end cross bars of a vi- For the purpose of illustrating the invention, bratory support lfl which, is in the form of a I have shown in the accompanying drawing a cradle having side bars ii to whichtheend it typical embodiment of it, which, in practice, will cross bars are fixed.

give satisfactory and reliable results. It is, how i2 are cross bars longitudinally adjustable on ever, to be understood that the various instruthe side bars ii and fixed in their adjusted posimentalities of which my invention consists can tions by fastening'devices iii. M are rollers the be variously arranged and organized, andmy brackets of which are adjustable on the cross invention is not limited he Cfi rlangewbars 12. The rollers are free to revolve and'serve 4.5 ment and organization of these instrumentalities i i as bearings for supporting the rotatable bo'dy to as herein set forth. i betested. The vibratory supportalso has cross "Figure 1 is a perspective view'o'f a balancing bars in longitudinally adjustable on theiside bars machineembodyin'g my invention; v H andv provided. with recesses or openings (I6 Figure Zis a sectional view of Figure l.- 1' through their bottoms adapted to receive pivots,

I Figure 3 is an enlarged detail of the pivot so that a fixed pivot can be provided ina selected -forming means. i i plane of the vibratory support. i1 designates Similar numerals indicate corresponding parts. 1 standards slidably mounted on the rails i and 1 Referring to the drawing: fixed in the positions to which they have been My present invention relatesmore particularadjusted longitudinally of the bed by clamping 551y t0 the pivot forming means of a balancing plates l3 and fastening devices IS. The standards I! carry at their upper ends the sleeves or casings 25 within which the pivot forming members are vertically movable. For convenience in manufacture, these pivot members are made in two parts, the lower part of which is in the form of a rod 25 having a rack 22 formed on it and threaded at its upper end as at 23 to receive a coupling sleeve M which engages the disc 25 of the upper ball shaped pivot member 26.

The racks 2'2 cooperate with pinions 2's on rods 28 journalled in the sleeve 25. Each rod is provided with a grasping handle 29, so that by turning the rod, its pivot member will be raised into its operative position or lowered into its inoperative position, 39 are fastening devices locking cross bars E5 in the positions to which they have been adjusted.

The operation of providing a fixed pivot for the vibrations of the vibratory support independent of its flexible mounting will now be apparent to those skilled in this art and is as follows:

A selected standard 57 is adjusted longitudinally of its bed and locked to the bed to bring lts pivot member at the proper location. One of the cross bars i5 is adjusted on the vibratory support to bring its recess in alignment with such pivot member. The handle 29 is then turned to cause the rack to move upwardly and move the pivot member 26 in a vertical direction into its operative position in its recess it. The vibratory support new has a fixed pivot for its vibration.

As soon as the unbalance has been determined for one plane of correction of the rotatable body, the corresponding pivot member is lowered into its inoperative position and the other pivot member is adjusted'into locked in its operative position to provide at a selected location a fixed pivot for the vibrations of the vibratory support.

It will now be apparent that the flexible mounting is entirely independent of the means for forming the fixed pivots.

If the balancing machine is to be used for quantity production of one article, the pivot forming means may be adjusted to their selected positions and the standards ll permanently secured to the bed in fixed positions.

In cases where a variety of bodies of different shapes and sizes are to be balanced the pivot forming means are adjusted longitudinally of the vibratory support.

The rotatable body under test and the vibratory support are wholly supported on the vibratory members and the pivot forming means does not carry any of the weight of the vibratory support and the rotatable body.

It will now be apparent that I have devised a new and useful balancing machine which embodies the features of advantage enumerated as desirable in the statement of the invention and the above description, and while I have, in the present instance, shown and described a preferred embodiment thereof which will give in practice satisfactory and reliable results, it is to be understood that this embodiment is susceptible of modification in various particulars without departing from the spirit or scope of the invention or sacrificing any of its advantages.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is:-

1. In a balancing machine, a bed, vibratory members fixed at their lower ends to the ends of said bed, a vibratory support having its ends supported at the upper ends of said vibratory members, specimen supporting means adjustable along said vibratory support, said vibratory members forming the sole support for said vibratory support, specimen supporting means and the specimen being tested and pivot forming means adjustable along the bed between said fixed vibratory members and having means to engage said specimen supporting means to form a right or left end pivot for the vibrations of said vibratory support.

2. In a balancing machine, a bed, vibratory members fixed at their lower ends to said bed, a vibratorysupport having its ends supported at the upper ends of said vibratory members, specimen supporting means on said vibratory support and adjustable longitudinally thereof, said vibratory members forming the sole support for said vibratory support, specimen supporting means and the specimen being tested and means adjustable longitudinally of the bed between the fixed vibration members and having means to engage said specimen supporting means to form a fixed pivot for vibratory movement of said Vibratory support.

3. In a balancing machine, a bed, a pair of vibratory members at opposite ends of the bed and fixed thereto, a vibratory support having its ends supported at the upper ends of said vibratory members, specimen supporting means adjustable longitudinally of said vibratory support, said vibratory members forming the sole support for said vibratory support, specimen supporting means and tr e specimen being tested, pivot carrying standards adjustable longitudinally of the bed between said fixed vibratory members, and pivot forming means carried by said standard and adapted to engage with said specimen supporting means to form a selected fixed pivot for the vibratory movement of said vibratory support.

4. In a balancing machine, a bed, rotatably adjustable vibration members having their lower ends permanently fixed to the ends of the bed, a vibratory support having its ends carried at the upper ends of said vibratory members, specimen supporting means on said vibratory support, said vibratory members forming the sole support for said vibratory support, specimen supporting means and the specimen being tested, standards mounted on said bed between said Vibratory members, and pivot forming means on said standards and cooperating with said specimen supporting means to provide a fixed pivot for the vibratory movement of said vibratory support.

5. In a balancing machine, a bed, a pair of vibration rods at opposite ends of the bed and having their lower ends rotatably adjustable on said bed, means to secure said rods in their adjusted positions, a cradle in which the upper ends of said rods are rotatable, spaced specimen supporting means longitudinally adjustable on said cradle between the vibration rods at the ends of the cradle, and spaced pivot forming means having their lower ends longitudinally adjustable along the bed between the vibration rods at the end of the bed and having means to engage the specimen supporting means to form a right or left fixed pivot for vibratory movements of the cradle.

TI-IORSTEN Y. OLSEN. 

